Synthesis of cordierite powder from talc, diatomite and alumina

A cordierite powder was synthesized from a batch composition of talc, diatomite and alumina. Sintered samples of the synthesized cordierite were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), and Rietveld analysis. The XRD analysis showed hexagonal or α-cordierite (in...

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Bibliographic Details
Published in:Ceramics international 2006, Vol.32 (4), p.407-409
Main Authors: Goren, R., Gocmez, H., Ozgur, C.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Chemistry
Colloidal state and disperse state
D. Cordierite
Diatomite
Exact sciences and technology
General and physical chemistry
Miscellaneous
Powders
Rietveld
Talc
Technical ceramics
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Summary:A cordierite powder was synthesized from a batch composition of talc, diatomite and alumina. Sintered samples of the synthesized cordierite were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), and Rietveld analysis. The XRD analysis showed hexagonal or α-cordierite (indialite) as a major phase along with MgAl 2O 4 spinel and cristobalite as secondary phases in the samples sintered at 1300 °C for 1 h, whereas indialite phase only was observed at 1350 °C for 3 and 5 h as well as at 1400 °C for 1 h. Density and linear thermal expansion coefficient of the sample synthesized at 1400 °C for 1 h were 2.47 g cm −3 and 1.8 × 10 −6 °C −1, respectively.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2005.03.016